Filter



(No Model.) 2 Sheets-Sheefi 1.

E. FRETZ & J. WAESPI.

' FILTER.

No. 392,323. 3 r Patented Nov. 6, 1888.

I I VZVJ/EIVTOR.

ATTORNEY,

2 SheetsSheet 2.

FILTER.

Patented Nov. 6, 1888.

(No Model.)

E. PRETZ 8; J. WAESPI.

l/VVE/VTOR,

Arm/Mir A 4 s Wlwm k. wiw.h S N M WITNESSES UNITED, STATES PATENT Fries.

EMIL FRETZ AND JACOB WAESPI, OF DALLAS, TEXAS.

FILTER.

SPECIFICATION forming part of Letters Patent No. 392,323, dated November6, 1888.

Application filed May 17, 1888. Serial No. 274,171. (No model.)

To all whom it may concern.-

Be it known that we, EMIL FRETZ and J AOOB WAEsPI,of Dallas,in thecounty of Dallas and State of Texas, have invented a new and ImprovedFilter, of which the following is a full, clear, and exact description.

Theinvention relates to filters such as shown and described in LettersPatent No. 373,257, granted under date of November 15, 1887, to JacobWaespi,Emil Fretz, John Spellman,and John Frey.

The object of the present invention is toprovide a new and improvedfilter which is simple and durable in construction and easily andconveniently cleaned without disturbing the gravel.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter,'and then pointed outin the claim.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of the improvement with parts removed. Fig 2 isa sectional side elevation of the same. Fig. 3 is a verticalcrosssection of the same on the line as m of Fig. 2, and Fig. 4. is alike view of a modified form of the same. 7

The improved filter A is provided with an inclined receptacle, B, havingon its upper end a receiving-chamber,0,into which leads the perforatedwater-supply pipe D,in a similar manner to that shown in the patentabove referred to.

Next to thereceiving-chamber O is arranged v the settling-chamber E,which discharges into the gravel-chamber F, the lower end wall, G, ofwhich is formed of a perforated plate, through which the water passesinto the exitbasin H, located at the foot of the receptacle B, andconnected with the watermains or suction-pipes of pumping-engines in asimilar manner to that described in the patent above referred to.

In the gravel-chamber F are arranged at suitable intervals thetransverse wedge-shaped ridges I, on the top of which rest theperforated plates J, made of suitable material, and

supporting the gravel or other filtering material, K, placed on top ofthe said plates, and extending to nearly the upper edges of the walls ofthe chamber F. A sediment-chamber, L, is thus formed on the bottom ofthe chamber F between two succeeding ridges, I. Into eachsediment-chamber L leads a pipe,N, either from the side,as showniu Figs.1, 2,and 3,o r from thetop,as illustrated in Fig. 4. The variouspipes,N,are preferably connected with the longitudinallyextending pipe0, leading to the water-supply pipe D. Each pipe N is provided with avalve, I, so as to connect or disconnect the said respective pipe N withor from the supply-pipe O.

In front of the inner end of each pipe N in the respectivesediment-chamber L is held, vertically, a thin plate,Q, secured toavertical rod, R, having its bearing in the bottom of the chamber F andextending above the same, carrying at the upper end a handle, S, forturning the said rod R and plate Q. The latter serves to direct thestream of water entering the pipe N to any part of the sediment chamberL when cleaning the filter, as hereinafter described. The handle Sstands, preferably, in line with the plate Q, so that the operator knowsthe direction of the latter. From each sediment-chamber L, opposite thepipe N, leads a pipe, T, to the outside, which pipe is .provided with aValve, U.

The operation is as follows: The water to be filtered passes first intothe receiving-chamber 0 through the supply-pipes D, and then flows intothe settling-chamber E, from which it passes into the gravel-chamberFandthrough the gravel K, to pass finally through the perforated plate Ginto the exit-basin H. The water in passingthrough thegravel K isdeprived by the latter of its impurities, which pass downward throughtheperforated plates J into the sediment-chamber L and locateprincipally against the ridges I. The valves P and U re main closedwhile the filtering is going on. When the operator desires to clean thefilter, the gravel K is not disturbed, and the valve in the outlet-pipeof the exit-basin is closed, so that the water fills the receptacle Fcompletely. However, any one of the chambers L may be opened to draw ofisediment while the operation of the filter is going on. The chambersnear the head of the filter must be re lieved of sediment oftener thanthe others. It is not positively necessary to flood the wholefilter,thereby stopping operations. The valve U of the outlet-pipe T isopened on one or more chambers L, so that the accumulated water in thegravel-chamber Ffiows out freely and fast through the said pipesT,thereby earrying with it all impurities and sediment that may havelodged in the gravel K. This operation is performed on each chamber L,beginning at the upper end of the chamber F. Sediment remaining in anyof the chambers L is cleaned out by opening the respective valve P ofthe pipe N, leading to the respect ive chamber L, so that water from thesupply-pipe D passes through the pipes O and N into the respectivechamber L and washes the sediment to and through the opposite outletpipeT. Every part of the chamber L is reached by the water entering the pipeN by the operator manipulating the rodR and plate Q by turning thehandle S so as to direct the stream of water to all parts of the chamberL.

Having thus fully described our invention, we

claim as new and desire to secure by Letters 25 Patent- In a filter, thecombination,with a filteringreceptacle provided with a gravel-chamber,oftransverse ridges held in the bottom of the said gravel-chamber,perforated plates held on 3 0 top of the said ridges, supporting thegravel and forming sediment-chambers on the bottom of the saidgravel-chamber, an outletpipe having a valve and leading from each ofthe said sediment-chambers, a water-inlet 35 EMIL FRETZ. JACOB XVAESPI.

\Vitnesses:

VICTOR H. HEXTER, \V. M. ED\VARDS.

